general_fact: 6817 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
math_fact: 6817 is an unremarkable number.
trivia: 6817 is an unremarkable number.
historical_date: August 30th is the day in 1967 that Thurgood Marshall is confirmed as the first African American Justice of the Supreme Court of the United States.